Interesting game this.
We'll see if Pep has learned from the way Celtic (at theirs) and Spurs pressed the absolute fuck out of us and made us very very uncomfortable.
This game should be about slowing the game down, making it bitty and making it 'dirty' (in the way a Mourinho team of old would've done using every trick in the book to make it stop-start and time waste). Grind them down, frustrate them. The 'defensive' elements of the game.
Play an 'open' game and anything could happen - 4-0, 0-4, 4-4..... who knows?
Adapt, make it niggly, come away with at least a draw, then win the mini-battle by doing them at ours.